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Climate Diagnostics Bulletin
Climate Diagnostics Bulletin - Home Climate Diagnostics Bulletin - Forecast Climate Diagnostics Bulletin - Extratropics


  Tropical Highlights

  Table of Atmospheric Indices  (Table 1)

  Table of Oceanic Indices  (Table 2)

  Time Series

  Time-Longitude Sections

  Mean & Anomaly Fields

  Appendix 1: Outside Contributions

Tropical Highlights


The pattern of tropical sea surface temperature (SST) anomalies

Tropical Highlights - September 2016



Sea surface temperatures (SSTs) were slightly below-average over the east-central equatorial Pacific during September 2016 (Fig. T18, Table T2). The latest monthly Niņo indices were -0.2°C for the Niņo 3 region, -0.6°C for the Niņo 3.4 region, and +0.5°C for the Niņo 1+2 region (Table T2, Fig. T5). The depth of the oceanic thermocline (measured by the depth of the 20°C isotherm) remained below-average across the central and eastern equatorial Pacific (Figs. T15, T16), and the corresponding sub-surface temperatures were 1-2°C below average (Fig. T17).


Also during September, the lower-level winds were near-average across the central and eastern equatorial Pacific, while upper-level westerly anomalies were seen near the Date Line, just south of the equator (Table T1, Figs. T20, T21). Meanwhile, suppressed convection was observed across the eastern and central equatorial Pacific (Figs. T25, E3). Collectively, these oceanic and atmospheric anomalies reflect ENSO-neutral conditions.


For the latest status of the ENSO cycle see the ENSO Diagnostic Discussion at:

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Page Last Modified: October 2016
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